Website relaunch: 1.) Create mock-ups for new website 2.) Implement changes (optional)

I want to relaunch my website.

FIRSTLY: I want to create some mockups of what a new website could look like. At the moment my website is very simple www.techpionier.de/en => I want toi keep it simple but a bit more modern.

SECONDLY, If you also have the skills to implement the new design (create the website) even better. I currently use shopify for my website and would like to keep shopify.

If you are interested please provide some examples of your recent work.